Urea Application Rate for Crop Straw Decomposition in Temperate China

Table 10

Enquiry table for urea application quantity of corn straw returning to the field with different yields per unit area.

Yield per unit area of corn	Urea dosages of different C : N adjustment targets
	25 : 1	30 : 1	35 : 1
3000	59.40	40.65	27.30
3375	66.75	45.75	30.75
3750	74.25	50.85	34.05
4125	81.60	55.95	37.50
4500	89.10	61.05	40.95
4875	96.45	66.00	44.25
5250	103.95	71.10	47.70
5625	111.30	76.20	51.15
6000	118.80	81.30	54.60
6375	126.15	86.40	57.90
6750	133.65	91.50	61.35
7125	141.00	96.60	64.80
7500	148.50	101.70	68.25
7875	155.85	106.80	71.55
8250	163.35	111.75	75.00
8625	170.70	116.85	78.45
9000	178.20	121.95	81.75

Unit: kg/ha.